Alchemy was an early protoscientific practice. It may also refer to:

• Alchemy and chemistry in medieval Islam
• Chinese alchemy
• Indian alchemy, or Rasayana

• Alchemy (comics), a Marvel character
• Alchemy (video game), a 2001 video game by PopCap Games
• Alchemy (novel), a 2004 novel by Margaret Mahy
• Doctor Alchemy, a DC Comics super-villain
• Alchemy (film), 2005 film

• Alchemy (Disclosure album), 2023
• Alchemy (Leah Andreone album), 1998
• Alchemy (Richard Lloyd album), 1979
• Alchemy (Third Ear Band album), 1969
• Alchemy (Yngwie Malmsteen album), 1999
• Alchemy: An Index of Possibilities, by David Sylvian, 1985
• Alchemy: Dire Straits Live, 1984
• Alchemy, by Au5, 2020

• "Alchemy", by Starset, from Horizons, 2021
• "The Alchemy", by Taylor Swift, 2024

• Alchemy Records (Japan), a label run by Jojo Hiroshige of the group Hijokaidan
• Alchemy Records (U.S.), a 1980s label co-founded by Mark Deutrom

• "Alchemy" (Eureka), an episode of Eureka
• Alchemy (Fullmetal Alchemist), an ability in the Fullmetal Alchemist manga/anime series

• Alchemy (Adobe), Adobe software project
• Alchemy (processor), a series of embedded processors originally from Alchemy Semiconductor, later owned by multiple other semiconductor companies
• Sometimes used as shortcut for SQLAlchemy, an object-relational mapper for the Python programming language
• AlchemyAPI, a company that uses machine learning to do natural language processing

• Alchemy (event), a regional Burning Man event in La Fayette, Georgia, US
• Alchemy (company), a defunct film production company previously known as Millennium Entertainment

• Alchemist (disambiguation)
• Alchemiya, a streaming service geared towards Muslims
• Alchemax, a fictional corporation